You are out, you have been out to lunch the whole time.
The Motor ratings, where just to show that even your basic Math was in correct, for the most basic of AC motor's, this showed that your calculation's where incorrect.
Yes any AC motor can have a different FLA rating, it just depends on the windings and Rotor size, but the basic AC 3 Phase motors do not deviate very much in there Amp rating.
A VFD Drive's output is V/H ratio and is 100%, The Bus voltage for 220v supply is 340v, not much more to it, there is no Power Factor or square root involved in this calculation, every VFD that use's a 6 pulse bridge rectifier, which is most work this way.
Almost all manufacturers use other components manufactured by other companies. there is nothing special about a VFD Drive or the brand name, some have better quality requirement's and a price to go for that quality. they all work the same.
You should not post what someone else has posted some where, if you have not seen it and checked it, you don't know if it is factual or not.
You posted this link and it tell a different story. and the troubles he had running on a low Amp circuit
your own post contradicts everything you have been posting. which 90% is incorrect information.
https://www.model-engineer.co.uk/for...?th=128681&p=3